Splicing structure for different type rails



N` t? ...uw 7pm. 1S .t Se

4 T .R9 www CE1 RM, B 2 soVNV IF DEM Rd Aww. Ci CMF S G Y m M Q P. Q 3 9 .l 9 2 ...m J

n n n v j Si;

Patented July` 429, 193D PATENT .FHQE f cLARKsoN Ag menacer., .oniNnw Rocinante, NEW YORK, AssIeNoR to eenen-Ain JOINT l comramgon Yonai, n.

Aoon-ronA'rIoNoENEw YORK i SPLIGNGSTRUGiIURilFGR bmFF-B'ENIWP iAlLS' l Appucaaon neigingen 2, 1929. lserial no. 382,877.

This invention relates to rail ijoints,i` and has particular reference toftl'ielsplicing oit rails otY the socalled Lheadree `type with standard rails.V

In track construction', asf-the advantages of the so-calle'd h'eadfree rail disclosed and claimed vin Thomsonf'Patents ReissueNo. 15,773 and No. 1,507,870 havefbecome more fully understoodand appreciated, it `has de@ veloped that such'rails are coming into gen-V eralus'e, with theresult that rails of the headfree type arebeing` incorporated in track with both Wornfandunworn standard rail's. This means, of course,ith'at where afheadfree frail isinsl'erted" in'V a traelfcontiguous Ito standv ard rails, al` `Satisfactcry H splice must beV iet# ectedfbetweenfjthe 'standard rail and the headreel.rail.` v r Primarily, a' headfree rail-tis so 'designated because thev joint bar used therewith has-head clearance romsthe underside" ofthe rail head anda loading engagement atthelhead fillet of the rail. According tothisconsvtruction," tightening lof the jointyboltsrresultsjin an upward and outward.sliding"engagement of' `the jointbarwith the Vvhead illet'of the rail until the bar is drawn'solidlyintol proper fit withthe-rail." On the-other hand, the joint bar commonly :used-with standard rails has head contact with the fishing surface atthe underside of therail heady and 'with 'the upper side of 'the Vrail flange"7 andffwh'en` the joint bolts vare tightened the barV i'sfor should be, drawn in a straight Iline laterally toward Vthe rail web; otherwise any canting'of the bar wouldresult in an improper tit of the bar with 'the'fraih with Vdai'iger of fracture or breakage fof fthe bar-either tightening, of or when the joint i'sys'uhjected to load.` j il" ,j

` /Vith the Ydevelopment leonsistingin ref placing standard'rails `by. headfree' rails has come 'the problem of providing a= splice answering particularly #tor `the requirements oi Ys trength` between rails oiiithese two different types.,y To solvelthis problem', it has been proL posedtofprovide ai joint barf'ormed at' one .end orfrailiheadclearanee and-loading engagement with the head fillet of the .headfr'ee rail,fan d"at itsotherendormed forhead contact with the under i'ace Vofthe headV and with tfheupper tace of the rail flange of the standard rail. f Inasmuch, however, as proper lit of head contact bar with a rail canfbe accomplished only by drawing the 4har, laterallyina straight lline into engagement with therail, andpro'per it cfa headfree bar withja: l'ei'lis effected by drawing the bar so that ithas upwardwand outward sliding eon-y v A tact` with the head 'filletl ofthe 'barand airotative movement of its foot, it is; manifest that `a joint'bar havingat one enda headfree construction and atits other end a head;` con-v tact construction would,besubjectedby the joint bolts to twisting strains,andthatfproper engagement of eitherlend ofthe ,barwith either railwould be practically iimpossiblev Moreover, suchY a bar could not ube satisfactorilyrollechandit formed in anyim'anner *Y and embodied ina track, would be extremely susceptible to fracture or breakage,- especially when subjected to load.,V Accordingly,

Vthe purpose off the present invention isLto provide a j ointrrleetween a so-called headfree rail and a standard rail-meeting vfully the requirements of strength, etc., .and `avoiding holt imposed or other stramson the joint bar suc-h `as :might `be likely to cause `fracture, or

breakageA oi'therfjoint` upon loadlheing imil posedthereon.

aforesaid development, and in carrying out the'foregcing purpose, itis proposed, accord Y ingfto this invention', toprovide a bar having its respective rail engaging endj porftions yvertically and laterally ojset .yi/ith" respeet to one'another tocompensate for, any f di'il'eren'ce in the height/,and section ofthe rails, and'to form each endV ofthe har,V for head-clearance and head iillet loading en# gagement with its related'rail', whereby the same vmovement of all portionsof the bar is j efeetivezto secure'a desired't'of the'bar with eachrail, `and whereby impositilonof undesirable strains m'thefjomt are avoided.` The present'bar` thus mayloerolled and economii cally-forgedI or bulldozed tothe final, form desireda, f H 1x .f L

AIn theaccompanying drawings, which are illustrative `of theinvention, and' wherein like i, A e0` Vln solving thepr'oblemfpresentedfbyrthe v characters of reference denote corresponding Y parts in the different views Fig. 1 is a side elevation illustrating a joint cil'ected between a standard rail and a headfree rail in accordance with the present invention. Y Y v Figure .2 is a transverse section through the headfree rail end of the present joint.

' Figure 3 is a transverse section through the standard rail end ofthe' joint. A l

Figure 4 is a detail elevation of the medial portion of the inner `face of the joint bar. Figure 5 is a detail horizontal section on the line'- of Fig.L 1; and 1 Figure 6' is a view similar to Figs. 2 and 3 illustrating an incorrect type of rail joint be- 10, aVbas'e-lland a web 12, thel essential dif-V ferencefbetween the standardrail R and the headfree rail R being that the former is provided with` axfishing surface 13 upon thek underside of itshead 10 adapted to be engaged by. a complemental joint bar fishing surface, Whereas the rail R is vor may be devoid of a fishing surface corresponding tothe surface 13 of the railAR', loading engagement of a jointbar withv a rail of this type essentially being with the headfillet 14 of the rail.

By reference to Fig. 6 of the drawings, wherein is illustrated the incorrect type of joint between a standard'rail and a rail of the'vheadfree type, it will be observed that the joint bar J hashead fishingengagement with the under face 13 of the head of the standard yrail' shownin full lines, and headf: free loading engagement A with the head fillet 14 of the headfree rail shown 'in dotted lines.

As is well known in the art, the "only practical lwa to secure ro er fit of a head coni y p p ally offset with respect to one another to comtact joint bar with a rail is by movementV of the vbar ina straight line inwardly and laterally 'toward the 'rail web, which Vmay be accomplished by using ordinary care in tighteningV the joint bolts to draw the bar into operative Vfit with the rail. If this isl not done and the bar is allowed to be drawn-into engagement with'the rail in a canted position, strains are set up which may result in 'fracture orbreakageof the bar immediately ,same is vsubjected to load, vif Vfracture or breakage does not result from tightening of the bolts. Moreover, Vunless the bar-is'drawn by the jointV bolts so that itsfishing surfaces are disposed jeflatly against the fishing surfacfesfof vthe rail, Aa satisfactory joint bearing bar initially beingengaged with the web of Vthe raill and being adapted to ride upwardly and outwardly under the influence of the force exerted thereonby the joint bolts, and

the-blows of a maul or the like, until the head of thebarjtakes loading vengagement with the head fillet of the rail, all as fully set forth in the aforesaid Thomson patents and as indicated herein by the showing in Fig..6 of thedrawing. Y

From the foregoing the impracticablility of a jointbar formed at one end for head contact with a standard rail, and formed at its other endfor' headfree, loading engagement with the head fillet of either ar standard or-a headfreerail, is atonce apparent. If the headfree end of the bar is drawn into engagement with the rail in the'l proper manner, obviously the'head contact end of the bar willbe canted, rendering itimpossible,

Vbecause of the inherent rigidityofthe bar, to

draw the head contact end of the bar properly into .engagement with the rail, and if the attempt is made to dorso, twisting strains will be set up in the bar rendering it extremely likely to fracture or breakage when subjected toload. On the other hand, if the head con- Vtactend of the bar isl drawn in a straight line Ylaterally to secure proper fit of this end of therbar with its relatedrail the headfree end willA be held'V against upward and outward movement withconsequent improper lit 0f this end of the bar with its'rail,and if itis attempted. to draw Vboth ends of the bar into engagement with `the rails simultaneously theY same impracticable, undersired results will ffollow.. Y v

According Ato the presentrinvention, the

Vjoint bar J'isffo'rmed'head free throughout its length, its ends beingvertically and laterpensate for any difference which may exist 1n the height andsectio'n between'the respec- Vtiverails. Vith such "a bar,r thesame movement of each end thereof is effective tozsecure present invention resides in formingthe rounded, rail head fillet engaging portionl of the head of the bar with amedial'depression, i X,Vso that contact of the head of the :bar with the eXtreme end portions ofthe rails is avoided. This has the advantage that when the ends of the bar are vertically and laterallyV offset to compensatefor any difference in height and section between the rails, any interference of the deflected or distorted medial portion of the bar with a proper fit of the head of the bar with the head fillets ofthe rails is eliminated. It also has the further advantage of avoiding marring or chipping of the head loading engagement-portions of the bar by the ends of the rails, due to the pound of wheels passing over the joint. j

Without further description it is thought that the features and advantages of the 1nvention will be readily apparent to those .skilled in the art, and it will of course be understood that changes in the form, proportion Y and minor details of construction may be resorted to, without departing from the spirit of the invention and scope of the appended claims. Y y i l 1 Iclaim:- Y l. ln a rail joint', a standard rail, a headfree-rail, `and a joint bar connecting said combination a standard type rail' withrflat` head fishing surfaces and another type rail whose head has bottom corner truncations eliminating flat head fishing surfaces, and a A splicing structure for rail joints in' Atype rail having no fiat head fishing surfaces, l

and a joint bar having at itsupper innercorner a rounded bearing member adapted to Y have a loading engagement in and against the headfillets of said both types of rails and also having a medial offsetting to compensatefor` any difference in height and section of the two rails. j j

In testimony whereof Ihereunto affix my signature.` i

omiRKsoNv AJ nIsBRow.

rails having lhead clearancefrom thev underside ofthe head ofthe standard rail and loading engagement at the head fillet of each rail.

2. in a rail joint, a standard rail, a headfree rail, and a joint bar connecting said rails, each ond of said joint bar being of the same cross sectional design and having head clearance from the underside ofthe head of the rail and loading engagementat the head fillet of the rail. n

3. A joint bar for connecting a standard rail with a headfree rail, the ends of said bar being vertically and laterally offset with i respect to one another to compensate for a dierence in height and section between the rails, and each end of said bar being formed to have head Vclearance from the underside of the head of the rail and loading engage- Y ment with the head fillet of the rail. j

Vno

Ll. A compromise joint bar for connecting.V

a standard rail with a headfree rail," the head i of said barfbeing formed at each end thereof Y for clearance from the underside of the head K of the rail and for loading engagement with `the head fillet of the rail, the fillet engaging surface 'of the head of said bar being medially recessed. Y n Y;

5. A rail splicing structure'including 'in ,i combination a standard type rail with Vhead fishing surfaces, another type rail with no head fishing surfaces and a j ointV bar having Y at its upper inner corner a bearing member adapt-ed to have rail engaging and loading engagement in the'headV fillets of both ltypes of rail. Y

6. A rail splicing structure including in ico 

